Are the stocks split and dividend back-adjusted?

How can I convert a dataset into a different format than Metatrader one?

Are Forex data futures or spot exchange rate?

I bought S&P 500 futures data from BTM and compared it with Yahoo ^GSPC Index, why is data different?

Because you’re comparing futures data with index data.

Is it possible to try a demo of your Expert Advisors?

Yes.

How can I import the Expert Advisors into Metatrader?

By importing them into this PC path: MQL4 => Experts. To know more, pls read this article’s steps

Can I use experts in Metatrader4 and not in other platforms?

Yes, you can.

Do I need a 24/7 online computer or a private server running Metatrader to trade with the experts?

Yes, you need it.

Do experts make excessive use of the leverage or use martingale systems or open too many correlated operations at the same time?

No, no and no. Experts do not use martingale and each one risks 1.5% of the total capital per operation. The maximum recorded by the 'Selected' portfolio is 6 open trades at the same time and 3 of them were correlated.

How much can I expect to earn with the Backtestmarket expert advisor?

It depends on the product, these are the live results of the Experts you can find inside the 'Selected' portfolio.

How do I import indicators into metatraders?

By importing them into this PC path: MQL4 => Indicators.

Can I use indicators to build my own expert advisor?

Yes you can.

How can I call the indicator on my expert advisor?

By following the instuctions on indicator's description within the product page.